Improvement in double-action pumps



i @einen grat-es gatent @fitta PATRICK FOLEY, or NINE'VEH, NEW YORK.

Letters Patent No. 80,617, dated 4, 1868.

IMPROVEMENT IliiV DOUBLE-ACTION PUMPS.

dlgs Stimuli nimh in im time tsthrs rttnt mit mating pat uf ille same.

TOVALL WHOM I'l MAY GONCERN: I

Be it known that I, PATRICK FOLEY, of Nineveh, in the county of Broome,land State oNewYork, have invented a new and improvedlDouble-Action Suction-Pump5fand I do hereby declare that the following is a full, clear, and exact description thereof, which will enable-others'skilled inthe art to make and use-the same, reference being had to the accompanying drawings, forming part of this speication, in which Figure V1 represents a side elevation of my improved pump. l Y

Figure 2 is a vertical longitudinal sectin of the same, taken on the plane ofrthe line :v x, iig. 3.

Figure 3 is a horizontal section of the same, taken on theplane of the line y y, fig. 2.

Figure 4 is a vertical transverse section ot' the same, taken on the plane of the line zz, fig. 3;

Similar-letters of reference indicate corresponding parts. l

This .invention rclatesto a new pump of that class in which two vertical cylinders with reciprocating pistons'are used, and whichare generally employed for raising water from-deep and other wells.

' My invention consists chiey in a novel arrangement of valves, whereby the connections of theindn'ction and discharge-pipe with the cylinders are closed, said valves being so arranged that, when the pump is not to be used, they can be opened to dischargcall the water from the cylinders, so that the freezing of the water within the pump or its pipes is completely avoided.

A B, in the drawing, are two upright cylinders, arranged close to each other, or any desired distance apart.

C D are two pistons, fitted respectively in theeylinders, as shown. The pistons are suspended from the t rods E E, which are Vrespectively pivoted to the two ends of a walking-beam, F, that is at its centre pivoted to a stationary post, G, projecting from the pump, as shown, or otherwiseiirmly arranged.

From the middle ot' the beam F projects a lever, H, which, when moved back and forth, will cause the beam to oscillate around its pivot, whereby reciprocating motion in opposite .directions .will be imparted to the pistons. i

The lower parts *of the cylinders are connected by a chamber, I, from which the dischargeepipe J extends upward, and the induction-pipe K isA either branched, so as torenter theV lower heads of the cylinders, or it enters a chamber, L, which serves the same purpose, as `shown in iig. 2.

` The perforations a a, in the bottoms of the cylinders, are closed bymeans of valves b 6which` are blockvs providedwith shanks, c, said shanks pivotcd lo lugs that project from the bottom, as shown, and projecting beyondthe pivots upward, so that if the piston is forced quite down, it will strike the projecting portion of the shank, and will depress it, thereby raising the valve, as shown in iig. The valves dcl, which cover the holes e e to the discharge-pipe, are of suitable construction.

M is a lever, pivoted to a lug, j', in the cylinder A, and having one arm, that tits under the valve 0l, pertaining to the cylinderl A, and another arm in tho cylinder, the latter arm'being raised by means of a spring, g, or by the weight of the other arm, so that its.other arm lcannot raise the valved. VBut when the piston C is forced quite down, it will depress theraised arm of the lcverM, and will thereby'cause the Ysame to. open the valved.

The operation of the pump is as that of any other double-acting pump, that is, the discharge-valve of one l cylinder and the'suction-valve of the other are raised during one stroke of the' pistons, while the other pair of valves isclosed. l

When it is desired to stop the operation, the piston C can Ybe brought quite down, whereby it will open -the valves b and d, pertaining to the cylinder A, when the water will ow out of' the discharge-pipe, and of the cylinder A, and will therefore not be liable to freeze in the same.

Bythcn forcing the piston D down upon the shank of its valve b, the water will also be discharged from the cylinder B. v

This pump can be arranged in the lower part of deep wells, in which case long rods, E E, connectits pistous with the beam F, which is arranged above: the well. In iig. 1, such long rods E are indicated.

-The `cylinders are open on top, and a tight piston-packing is therefore not required, as water may always remain upon the pistons. t a

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- The.arrangement of the lever M with relation to the cylinders A B, chamber I, valves d, and v'alves b b, whereby, asthe piston C descends, thc valve d is opened, by means of the lever M,to discharge the water from the chamber I intorthecylinder A, the valves b b being yoperated todischarge the water from the cylinders A B into the chamber L, by the alternate strokes of the pistons C D, as herein described, for the purpose'specifcd.

' PATRICK FOLEY. Witnesses:

C. HT HoBBs, .JOHN BADGETT. 

